EAServer is an application server developed by the company Sybase. It includes an integrated set of tools used to create and run web applications with support for high levels of traffic, dynamic content and intensive processing of online transactions. EAServer provides the necessary infrastructure to run applications distributed based on components, residing in the middle layer of a multi-layer architecture, between the application client and the remote database. The most recent versions of EAServer are 5.5 and 6.1 (last revised 12/12/2007).